This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Find out whether putting something on top of a plant will inhibit its growth.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Transform your uncomfortable wooden shoes into charming mini planters!

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Make "fossils" with your child to hide in the sandbox or at the park or the beach, to help your child explore his archaeological side.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Discover whether a metal will expand under hot water.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Looking for a fun way to encourage imaginative play? Try crafting these animal dice with your preschooler.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

In this science fair project you will make a model of a cell membrane using very simple material.